Inform 10.1.1 was released only 10 days ago, but sandboxing issues on Linux meant that we were unable to publish a working app for Linux without minor modifications to the build manager inside Inform. So the main point of v10.1.2 is that it includes those modifications, but it also includes ten miscellaneous bug fixes.
Inform's build dependencies are Inweb, which at the time of this release was in version 7.2.0, and Intest, currently 2.1.0. Any versions compatible with these in the semver sense should be fine to build this release of Inform, and other versions may well also work.
See the release note here.